[tabbott]

For what it's worth, Zulip has a Mattermost data import tool, and communities are an important use case when we set product direction.

While I can't promise we won't ever change our exact monetization strategy, we're not venture-funded, and thus are immune to the usual enshittification pressures. https://zulip.com/values/ has some context.

(I lead the Zulip project)